Hello, and sorry to hear you don't feel well. Let me tell you a little about myself before I say anything. I'm 23 and I got CFS at 19. When I was 19 I felt exactly the same as you. (still do at times) I've always been bright and pretty athletic most of my life, so everyone always expected so much from me.( Teachers, coaches, friends, parents) Then out of the blue, I stoped preforming at the level I did before. Especially the concentration and physical ability. All I can say to you is to read the link given to you above and show people. The ones who love you and care about you might not understand at first, but they will. Be proactive, be as healthy as you can, that always helps me. Eventually you will learn how to deal with this illness. Just remember you have an illness, the illness doesnt have you. Even though its really hard to, be as positive as you can. Remember your not alone, there are many of us going through the same struggles and you can get through them too. I wish you the best, and I encourage you to keep asking if you have questions because people on this forum are nice and many people know alot of different resources. Take care.
Johnny